C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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81 block i.d.

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Old Mar 13, 2010 | 03:18 PM
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Default 81 block i.d.

Looking at 81 vette.Block casting #3970010.#on deck is K11 04 TAX.Or is it KII instead of K11 ?Is it the oe block?

Last edited by stocker7489; Mar 13, 2010 at 03:20 PM. Reason: change numbers
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Old Mar 13, 2010 | 04:07 PM
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Assuming I reading the book correctly, according to the "Corvette Authentic Restoration Guide" 1968-1982 by Richard Prince, a 1981 should have a block casting of 14010207. 3970010 was used from 1970-80. Hope that helps.
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